Issue 55

A. I. Hassanin et alii, Frattura ed Integrità Strutturale, 55 (2021) 110-118; DOI: 10.3221/IGF-ESIS.55.08

consistent with the experimental results were verified. A study was also conducted on the effect of changing the degree of shear connection between the concrete slab and the steel beam, and some conclusions were reached: 1) A good compatibility has been reached between the model used by the finite element method and previous experimental test data, this compatibility ensures the validity of the model in predicting and analyzing the behavior of the composite beams under the influence of fatigue loading with different shear connection degrees. 2) Based on the results obtained, it is preferable that the value of the degree of shear connection during fatigue loading is not less than 80% in order to avoid premature loss of composite action and thus reduce the fatigue life of the beam. 3) In cases of shear connection levels greater than 80%, the failure mode of the beam was fatigue cracking along the weld area when the upper fatigue limit equaled a value higher than 56% of the final load. 4) At shear connection levels below 80%, the mode of failure in the weld zone was more severe due to the premature loss of composite action. Therefore, care should be taken to strengthen this area or be careful not to be loaded in low-levels of shear connection. 5) The distribution of shear forces resulting from loading is subject to the momentum created by the presence of the studs in a number that allows them to resist these forces. Therefore, it is not possible to neglect the studs in the zero share areas.

D ATA A VAILABILITY S TATEMENT

S O

ome or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.

C ONFLICT OF INTEREST STATEMENT

n behalf of all authors, the corresponding author states that there is no conflict of interest.

R EFERENCES

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